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2 years ago

Draw structures from the following names, and determine which compounds are optically active:(b) 3-chloro-3-methylpentane

Chemistry

1 answer:

VladimirAG [237]2 years ago

8 0

The given compound 3-chloro-3-methylpentane is not optically active .

Because this compound have plane of symmetry (POS) and center of symmetry (COS) i.e. have di-symmetry . And also forms superimposable mirror image . the compound is not optically active .

It does not have chiral center.

Here the carbon atom has only 3 distinct groups i.e. ethyl , chlorine , methyl .

<h3>What is di-symmetry?</h3>

Di-symmetry is that which have no center of symmetry and plane of symmetry and alternate axis of symmetry .

<h3>Chiral center :</h3>

Have Sp3 hybridized center (4sigma bond ) .

4 distinct group is attached to the chiral atom. form non -superimposable mirror image .

<h3>What is optical isomerism ?</h3>

Same molecular formula and same structural formula . also have same physical and chemical properties .

They differ in their behavior towards plane polarized light (ppl) .

Learn more about chiral center here:

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How many pounds of carbon dioxide are emitted of 400 liter pls i need asap

Nookie1986 [14]

884 pounds of carbon dioxide are emitted in 400 litres.

What is a pound?

The pound is defined as the basic unit for weight in the Foot Pound Second (F.P.S) system and is equal to 16 ounces.

To convert a litre measurement to a pound measurement, multiply the volume by 2.204623 times the density of the ingredient or material. Thus, the volume in pounds is equal to the litres multiplied by 2.204623 times the density of the ingredient or material.

One litre of water weighs approximately 2.21 pounds.

So 400 liter = 400 liter x 2.21 pounds

= 884 pounds

Hence, 884 pounds of carbon dioxide are emitted in 400 litres.

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4 0

3 years ago

Which of these neutralization reactions has a ph < 7 when equal molar amounts of acid and base are mixed. select one:

emmasim [6.3K]

The correct answer is B.
Strong acids completely dissociates to give hydrogen ions . Weak bases can only partially dissociate to give hydroxide ions .
Therefore when equal amounts of acid and base are mixed, while Acid is completely dissociated and gives out hydrogen ions but base only gives out a fraction of hydroxide ions.
Therefore number of hydrogen ions in the solution will be higher than hydroxide ions, resulting in an acidic pH. Therefore pH <7

6 0

3 years ago

Read 2 more answers

10. Given the reaction below, which is the reduced substance? Mg + Cl2 Mg2+ + 2Cl-

atroni [7]

Answer:

2Cl-

Explanation:

When a substance is reduced, it gains electrons. Because electrons are negatively charged, the substance that is reduced will have a negative charge. 2Cl- is the substance that was reduced because it became negative.

7 0

3 years ago

Alex saw a rusty old car in an abandoned lot. Because he had recently read about chemical reactions, he began to wonder how the

Mice21 [21]

The answere is A .......

8 0

3 years ago

When a 0.680 g sample of olive oil is burned in a calorimeter, the heat released increases the temperature of 370 g of water fro

Lena [83]

Answer:

the energy value of the olive oil kJ/g = 36.880 KJ/g

Explanation:

we can calculate energy gained by the water which generated by the reaction from this formula :

Q = mc∆t

where:

m is the mass of water= 370 g

c specific heat of water = 4.184 J/g·°C

∆t is the change or difference in temperature in °C = 38.9 - 22.7 = 16.2 °C

by substitution:

Q = 370g * 4.184 J/g.°C* 16.2°C

= 25078.896 Joule

the energy value of the olive oil = Q / mass of olive oil

= 25078.896 Joule/ 0.68 g

=36880 J/g

= 36880 / 1000 = 36.880 KJ/g

6 0

3 years ago